---

yaml --- r: 351694 b: refs/heads/master c: d904d3e h: refs/heads/master v: v3
git-mirror · Jan 26, 2013 · 7047ddb · 7047ddb
1 parent 25f2580
commit 7047ddb
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Showing 3 changed files with 10 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 156c2bb9f88065c8da78814f98fde665a5cbb527
+refs/heads/master: d904d3edcbb26efc86ea3575bb4265559801a94b
diff --git a/trunk/include/uapi/linux/can/gw.h b/trunk/include/uapi/linux/can/gw.h
@@ -51,6 +51,7 @@ enum {
 
 #define CGW_FLAGS_CAN_ECHO 0x01
 #define CGW_FLAGS_CAN_SRC_TSTAMP 0x02
+#define CGW_FLAGS_CAN_IIF_TX_OK 0x04
 
 #define CGW_MOD_FUNCS 4 /* AND OR XOR SET */
 

diff --git a/trunk/net/can/gw.c b/trunk/net/can/gw.c
@@ -52,6 +52,7 @@
 #include <linux/skbuff.h>
 #include <linux/can.h>
 #include <linux/can/core.h>
+#include <linux/can/skb.h>
 #include <linux/can/gw.h>
 #include <net/rtnetlink.h>
 #include <net/net_namespace.h>
@@ -347,6 +348,13 @@ static void can_can_gw_rcv(struct sk_buff *skb, void *data)
 		return;
 	}
 
+	/* is sending the skb back to the incoming interface not allowed? */
+	if (!(gwj->flags & CGW_FLAGS_CAN_IIF_TX_OK) &&
+	    skb_headroom(skb) == sizeof(struct can_skb_priv) &&
+	    (((struct can_skb_priv *)(skb->head))->ifindex ==
+	     gwj->dst.dev->ifindex))
+		return;
+
 	/*
 	 * clone the given skb, which has not been done in can_rcv()
 	 *